CVE-2006-0977: Craig Morrison Mts Pro

Medium severity, CVSS 5.0. EPSS: 1.7% chance of exploitation in the next 30 days.

Craig Morrison Mail Transport System Professional (aka MTS Pro) acts as an open relay when configured to relay all mail through an external SMTP server, which allows remote attackers to relay mail by connecting to the MTS Pro server, then sending a MAIL FROM that specifies a domain that is local to the server.

Affected products

Published 2006-03-03. Last modified 2026-06-16.